Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..244..350c&link_type=abstract
Dark Galaxies and Lost Baryons, Proceedings of the International Astronomical Union, IAU Symposium, Volume 244, p. 350-351
Astronomy and Astrophysics
Astronomy
Surveys–Galaxies: Clusters: Individual: (A1367)–Galaxies: Evolution–Radio Lines: Galaxies
Scientific paper
We present 21 cm observations of 5×1 square degrees centered on the local Abell cluster 1367 obtained as part of the Arecibo Galaxy Environment Survey. This represents the first HI selected sample covering the core and the outskirts of a local cluster of galaxies. Combining the HI data with SDSS optical imaging we show that in HI selected samples follow scaling relations similar to the ones usually observed in optically selected samples. The most striking difference between HI and optically selected samples resides in their large scale distribution: while optical and X-ray observations trace the cluster potential very well, at radio wavelengths there is almost no evidence of the cluster presence.
Auld Robbie
Catinella Barbara
Cortese Luca
Davies Jonathan I.
Gavazzi Giuseppe
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